Karaoke

P: Dad, I don't like Karaoke.

Dad: Okay... Why not?

P: He throws bombs.

Dad: He? Who is "Karaoke?"

P: He lives in Spiderman's apartment and he wants to kill Spiderman but Spiderman and Batman and Superman are more powerful than him.

(But apparently he's allied with the Loch Ness Monster.)